Mouse modifier to click keyboard and sustain a note

My frikkin midi keyboard keeps not sending midi. It is difficult to develop an arpeggiator if you don't have a working midi keyboard. Could you add an option such as a mouse modifier to create a stuck note on the keyboard?

Such as: ctrl + click on a keyboard key causes key to stick until you click it again (any mouse modifier to un-stick it).

Trying to copy/paste this but can not seem to find any info on how or where to do that.. I get an error when I tried to do it with "load script from clipboard" that says there is no onControl function.
and pasting in a script editor just pastes the random string.

@macromachines I think you use an old Hise build because of using "Replace with clipboard content" menu. I suggest you to use current version (1.6.0). In latest version "import Hise snippet" menu is active. And it has lots if new features, bug fixes than older versions...

@macromachines For latest Hise version; you need to download this source files; follow the tutorials and build Hise yourself. Also it will be a good practise for you to construct necessary setup for compiling your pluguns in pc or mac. Ready to use .exe version is not the latest one (even it says "Download Latest Version" in the website ) You need to go from source code for current version.

@orange Ok compiled the JUCE>Xcode. Damn that intel IPP library is huge.. like 1 gb.. wtf!
Is it possible to set this up to build in the JUCE JIT compiler? seems like it doesn't know where to find the IPP and some of the modules when I tried that way. Xcode compiles fine but I am getting debugger errors when running it:

UI API called from background thread Group file:///Users/nicholascraftisiii/JUCE/HISE-1.60/projects/standalone/Builds/MacOSX/../../../../JUCE/modules/juce_gui_basics/native/juce_mac_NSViewComponentPeer.mm: runtime: UI API called from background thread: -[NSView frame] must be used from main thread only

and also in the console JUCE Assertion failure in StreamingSamplerVoice.cpp:194 (lldb)

@macromachines IPP automayically integrates with your Xcode. When installing ipp, you can see that instsller detects your Xcode, so it automatically integrates. If you couldn't see that during installation of ipp, you can uninstall and reintsall ipp. Do you don't locate ipp on juce. Just be sure that ipp is "on" in juce. By the way Hise works with Xcode 8. Don't use xcode 9.

I haven‘t used Xcode 9 yet but I heard many horror stories so I am not too ambitious to update it.

The Projucers JIT compilation is not a fully standard compliant compiler and in my experience isn‘t usable for anything bigger than simple C++ projects so it‘s highly unlikely that something like HISE will ever run there.